package com.jihu.mall.product.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.jihu.mall.product.entity.SkuImagesEntity;
import com.jihu.mall.product.entity.SpuInfoDescEntity;
import com.jihu.mall.product.service.*;
import com.jihu.mall.product.vo.SkuItemSaleAttrsVo;
import com.jihu.mall.product.vo.SkuItemVo;
import com.jihu.mall.product.vo.SpuItemAttrGroupVo;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.math.BigDecimal;
import java.util.List;
import java.util.Map;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ThreadPoolExecutor;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.jihu.mall.common.utils.PageUtils;
import com.jihu.mall.common.utils.Query;

import com.jihu.mall.product.dao.SkuInfoDao;
import com.jihu.mall.product.entity.SkuInfoEntity;


@Service("skuInfoService")
public class SkuInfoServiceImpl extends ServiceImpl<SkuInfoDao, SkuInfoEntity> implements SkuInfoService {

    @Autowired
    private SkuImagesService imagesService;

    @Autowired
    private SpuInfoDescService spuInfoDescService;

    @Autowired
    private AttrGroupService attrGroupService;

    @Autowired
    private SkuSaleAttrValueService skuSaleAttrValueService;

    @Autowired
    private ThreadPoolExecutor threadPoolExecutor;

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<SkuInfoEntity> page = this.page(
                new Query<SkuInfoEntity>().getPage(params),
                new QueryWrapper<SkuInfoEntity>()
        );

        return new PageUtils(page);
    }

    @Override
    public void saveSkuinfo(SkuInfoEntity skuInfoEntity) {
        this.baseMapper.insert(skuInfoEntity);
    }

    @Override
    public PageUtils queryPageByCondition(Map<String, Object> params) {
        LambdaQueryWrapper<SkuInfoEntity> wrapper = new LambdaQueryWrapper<SkuInfoEntity>();
        String key = (String) params.get("key");
        if(!StringUtils.isEmpty(key)){
            wrapper.and(w ->{
               w.eq(SkuInfoEntity::getSkuId,key).or().like(SkuInfoEntity::getSkuName,key);
            });
        }
        String catalogId = (String) params.get("catalogId");
        if(!StringUtils.isEmpty(catalogId) && !"0".equalsIgnoreCase(catalogId)){
            wrapper.eq(SkuInfoEntity::getCatalogId,catalogId);
        }
        String brandId = (String) params.get("brandId");
        if(!StringUtils.isEmpty(brandId) && !"0".equalsIgnoreCase(brandId)){
            wrapper.eq(SkuInfoEntity::getBrandId,brandId);
        }
        String min = (String) params.get("min");
        if(!StringUtils.isEmpty(min)){
            wrapper.ge(SkuInfoEntity::getPrice,min);
        }
        String max = (String) params.get("max");
        if(!StringUtils.isEmpty(max)){
            try {
                BigDecimal bigDecimal = new BigDecimal(max);
                if(bigDecimal.compareTo(new BigDecimal("0")) == 1){
                    wrapper.le(SkuInfoEntity::getPrice,max);
                }
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
        IPage<SkuInfoEntity> page = this.page(
                new Query<SkuInfoEntity>().getPage(params),
                wrapper
        );
        return new PageUtils(page);
    }

    @Override
    public List<SkuInfoEntity> getSkuBySpuId(Long spuId) {
        List<SkuInfoEntity> list = this.list(new QueryWrapper<SkuInfoEntity>()
                .lambda().eq(SkuInfoEntity::getSpuId,spuId));
        return list;
    }

    @Override
    public SkuItemVo item(Long skuId) throws ExecutionException, InterruptedException {
        SkuItemVo skuItemVo = new SkuItemVo();
        //1.sku基本信息获取 pms_sku_info
        CompletableFuture<SkuInfoEntity> infoFuture = CompletableFuture.supplyAsync(() -> {
            SkuInfoEntity info = getById(skuId);
            skuItemVo.setInfo(info);
            return info;
        }, threadPoolExecutor);

        CompletableFuture<Void> imagesFuture = CompletableFuture.runAsync(() -> {
            //2.sku的图片信息 pms_sku_image
            List<SkuImagesEntity> images = imagesService.getImagesBySkuId(skuId);
            skuItemVo.setImages(images);
        }, threadPoolExecutor);

        CompletableFuture<Void> saleAttrsFuture = infoFuture.thenAcceptAsync((res) -> {
            //3.获取spu的销售属性组合
            List<SkuItemSaleAttrsVo> saleAttrVos = skuSaleAttrValueService.getSaleAttrsBySpuId(res.getSpuId());
            skuItemVo.setSaleAttr(saleAttrVos);
        }, threadPoolExecutor);

        CompletableFuture<Void> infoDescFuture = infoFuture.thenAcceptAsync((res) -> {
            //4.获取spu的介绍
            SpuInfoDescEntity spuInfoDesc = spuInfoDescService.getById(res.getSpuId());
            skuItemVo.setDesp(spuInfoDesc);
        }, threadPoolExecutor);

        CompletableFuture<Void> spuAttrGroupFuture = infoFuture.thenAcceptAsync((res) -> {
            //5.获取spu的规格参数信息
            List<SpuItemAttrGroupVo> attrGroupVos = attrGroupService.getAttrGroupWithAttrsbySpuId(res.getSpuId(), res.getCatalogId());
            skuItemVo.setGroupAttrs(attrGroupVos);
        }, threadPoolExecutor);

        //等待所有任务都完成
        CompletableFuture.allOf(imagesFuture,saleAttrsFuture,infoDescFuture,spuAttrGroupFuture).get();

        return skuItemVo;
    }

}